Cobray Terminator - parts assembly and shooting

Recently, I picked up on of the worst shotguns ever invented and I decided I needed to take it apart because the gun was filthy and all the lubricant had dried up. That’s where my problems began. The breech WOULD NOT come loose. Years of neglect by the previous owner and zero lubrication left it frozen in place. I soaked the rear in penetrating oil for a couple of days, that did nothing. I got frustrated and used a big wrench and oops, that left a couple of marks. So I did the thing I didn’t want to broke out the torch. I heated up the rear part and hit it about 100 times with a plastic head mallet and then, miraculously, the breech came free. I don’t know if it was just dried lube or red loctite, but now it moves freely and it has fresh CherryBalmz lube. The original finish is slightly messed up, but I am happy it moves and I can clean and inspect it without any more issues! Shooting it is a different story. Its fun to maybe twice. After that its just torture. I bruised my